First of all it doesn't take much knowledge to start investing in Bitcoin. Gaining knowledge can be essential to prolong and secure your investment. Secondly, one of the fundamental main points of investment is the source of income. If you have no source of income then I think there is no need for you to invest. I don't think anyone would suggest investing if you have no source of income, there is no question of investing with debt. This may be an act of sheer folly. To invest you must first have a source of income, which is surplus after meeting your and your family's needs or an alternative source of income.
If it is about investing then their is no much to given when it comes to knowledge, bitcoin you need more money when you want to invest when you want to invest. I also feel like when it involves with big money that is when you will enjoy your investment, so either you want to trade or you want to hold putting in a lot of money bitcoins is one of the finest investment you can start with, just jokes if you want to start with small amount of money you can actually go ahead to start. Investing without source of income will make it very hard for you to enjoy your life, we all know how the investment works it might take a while for you to start making money. And anyone that wants to invest with borrowed money is only trying to put their self in more trouble, if the investment should fail then their is no excuse you have to pay the person back their money, it is better to just invest with your own money.